Clock



FIG. 1 is a front and left side perspective view of a clock showing my new design;

FIG. 2 is a front view of the clock;

FIG. 3 is a left side elevation of the clock shown with the rear support in a retracted position;

FIG. 4 is a right side elevation of FIG. 3;

FIG. 5 is a top plan view of FIG. 3;

FIG. 6 is a bottom plan view of FIG. 3;

FIG. 7 is a rear elevation of FIG. 3; and,

FIG. 8 is a rear and right side perspective view of the clock shown with the rear support in an extended position.

The broken lines shown in FIGS. 1 and 2 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a clock, as shown and described. 